Thermoplastic bag and method of forming the same

专利名称：Thermoplastic bag and method of forming

the same

发明人：Randolph D. Prader,Gordon L. Benoit申请号：US07/139215申请日：19871229公开号：US04812055A公开日：190314

摘要：A thermal plastic film bag structure having front and rear walls, gusseted sidewalls and a sealed bottom. This bag which has a tendency to form holes in the bottom atthe seal transition point between the four layers of the gusset and the two layers of thecentral region of the bag is improved by providing seal areas, e.g. circular seals which arelocated slightly above the bottom seal line and slightly inside of the vertical line formedby the innermost reach of the gussets on both sides of the bag. The seal areas relievestrain at the weak regions in the bottom of the bag.

申请人：MOBIL OIL CORPORATION

代理人：Alexander J. McKillop,Charles J. Speciale,James P. O'Sullivan, Sr.

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